Hi everyone. Ive been trying to create a scrub with castile soap using this DIY Turmeric & Ginger Body Scrub - Soap Queen formula (except no turmeric, swapped olive oil for coconut, and coconut fragrance instead of ginger). I totally didn't realize that the fragrance had vanillin until the scrub turned brown. Basically what im asking is if I use a fragrance with 0% vanillin in it won't discolor the scrub right? Or do fragrances just not mix well with castile soap? Thanks